I have a Galaxy S3 that has been locked by the Android device manager

[AC Question]

It has been locked my Android device manager and switches to a screen that says call owner to an old number of ours that no longer works we can't remember the password or code can anybody please help us unlock it

 

[B. Diddy]

Welcome to Android Central! How did you forget your password or PIN--is this a really old phone that you haven't used in a while? If you fail the unlock enough times, does it ask for your Google account information and password?